No Sound... Mostly

[BitTwister]

Just ripped 2 DVDs of The Lucy Show (TV Classics The Lucy Show, Platinum Disk Corporation 2002).

Both disks extracted the 7 shows on each disk, with no sound. This was the case both backing up first to .ISO and then ripping as well as ripping directly from the DVDs. Also in both cases there is an 8th file that appears to be a 2 minute biography of Lucille Ball that has sound.

So, succesfully backed up and ripped, but no sound on the episodes. What?

Following is some info that might be relevant.

Drive Information
OS device name: D:
Current profile: DVD-ROM
Manufacturer: PIONEER
Product: BD-RW BDR-212U
Revision: 1.01
Serial number: CIDL053287WL
Firmware date: 2020-07-21
Bus encryption flags: 1B
Highest AACS version: 68

LibreDrive Information
Status: Enabled
Drive platform: RS8F01
Firmware name: PIONEER BDR-212T
Firmware type: Original (unpatched)
Firmware version: 1.01/ID83
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

Disc Information
Label: LUCY_SHOW_VOL1
Timestamp: 2002-03-05 10:06:42
Data capacity: 6.10 Gb
Disc type: DVD-ROM
Disc size: 120mm
Maximum read rate: 10.08 Mbps [1x]
Number of layers: 2 (OTP)

*******************************

MakeMKV v1.18.1 win(x64-release) started
Using LibreDrive mode (v01.0 id=DFAA920B9011)
Using direct disc access mode
Title #1 has length of 25 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #2 was added (1 cell(s), 0:02:01)
Title #3 has length of 63 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #4 was added (4 cell(s), 0:25:24)
Title #5 was added (4 cell(s), 0:25:23)
Title #6 was added (4 cell(s), 0:25:29)
Title #7 was added (4 cell(s), 0:25:22)
Title #8 was added (4 cell(s), 0:25:23)
Title #9 was added (4 cell(s), 0:25:21)
Title #10 was added (4 cell(s), 0:25:13)
Operation successfully completed

[dcoke22]

If you use the utility MediaInfo does it show a sound track in your .mkv files?

[BitTwister]

Hmmm... using the MediaInfo Tree View, there is no Audio section at all!
I just fired up an old DVD player and TV to prove to myself that the DVDs actually do have audio, and of course they do.
Great, now what? Some unusual setting in MAKEMKV that must be tweaked only for these two DVDs, I suppose.